1. Select the incorrect statement.
A) q is the symbol for heat
B) q = mCsΔT
C) The unit for q is Joules
D) q is positive when the system releases heat
2. Select the incorrect statement.
A) w is positive when work is done on the system
B) w = PΔV
C) The unit for w is Joules
D) w is the symbol for work
1. Select the incorrect statement. A) q is the symbol for heat B) q...
Energy change is the sum of heat and work: ΔE = q + w. Work is calculated by: w = -PΔV What is the change in energy (in joules) if a reaction absorbs 72.8 J of heat and increases in volume from 0.250L to 0.750L at a constant pressure of 1.168 atm? Please include the correct sign with your numerical result. (Note: Make sure your units are consistent when combining energy terms. The conversion factor you need is: 1 L·atm...
1. A gas absorbs 0.0 J of heat and then performs 30.8 J of work. The change in internal energy of the gas is a. 61.6 J. b. 30.8 J. c. -61.6 J. d.-30.8 J. e. none of these 2. Which of the following statements correctly describes the signs of q and w for the following exothermic process at P= 1 atm and T = 370 K? H2O(g) → H2O(1) a. q and w are negative. b. is positive, wis...
10. Select the correct statement. A) In an exothermic reaction, the surroundings releases heat. B) If the sign of w is negative, the reaction is always exothermic. C) If ΔE is negative, the reaction is always exothermic. D) When the surroundings gains heat, the reaction is exothermic.
Which of the following statements is incorrect?
Which of the following statements is incorrect? Select one: O a. Enthalpy is a state function. O b. The value of q is positive when heat flows into a system from the surroundings. OC. Internal energy is a state function. O d. Heat flows from a system into the surroundings in an endothermic process. e. The value of q is positive in an endothermic process.
When a system is taken from state a to state b in the figure along the path acb, 95.0 J of heat flows P с b d V 0 into the system and 64.0 J of work is done by the system. Part B When the system is returned from b to a along the curved path, the absolute value of the work done by the system is 31.0 J. How much heat does the system liberate? Express your answer...
When a system is taken from state a to state b in the figure along the path acb, 95.0 J of heat flows р с b a d V 0 into the system and 64.0 J of work is done by the system. Part B When the system is returned from b to a along the curved path, the absolute value of the work done by the system is 31.0 J. How much heat does the system liberate? Express your...
Select the statement that correctly describes an endothermic process. a) Heat is lost by the system, but work is done on the system. b) The enthalpy change for the process is negative. c) Heat is released by the system, to the surroundings. d) The temperature change of the products is greater than that of the reactants. e) The enthalpy of the products is higher than that of the reactants.
Question 13 1 pts When heat is absorbed by the system and work is done by the system on the surroundings then both q and ware positive. both , and w are negative. O qis positive and wis negative. qis negative and wis positive. both q and w are zero. 1 pts
Warmup questions: (no points, but no penalty) A. If heat transfer is into the system, Q will be positive B. If heat transfer is out of the system, Q will be [negative The actual problem 380 J of work are done on a gas while its volume is decreased. At the same time, the system's thermal energy decreases by 10 J. What is the absolute value of the heat transferred into (or out of) the system in this process? Enter...
Review Constants When a system is taken from state a to state b in the figure (Figure 1) along the path acb, 91.0 J of heat flows into the system and 59.0 J of work is done by the system If the internal energy is zero in state a and 6.0 J in state d, find the heat absorbed in the processes ad. Express your answer in joules. IVO AED ? 26 J Figure < 1 of 1 Submit Previous...